Adsorption kinetics is an important parameter often overlooked in the evaluation of CO2 sorbent materials performance. In this contribution, we established an operational description of the CO2 adsorption kinetics by our recently reported family of novel hybrid sorbents (HS) based on supported zinc-functionalized ionic liquid (IL), across a wide range of IL loading and a morphologically diverse set of porous supports. Phenomenological analyses of apparent and diffusion kinetics models elucidated the nature of adsorbate-adsorbent interactions and the determination of the rate-limiting mechanistic step, respectively. Correlation of the calculated rate constants from Lagergren's pseudo-first order model, and Ho and McKay's pseudo-second order model with IL loading and textural properties of the sorbents strongly suggests that the IL remained the active component of the sorbent, and overall adsorption occurs via a combination of physical and chemical interactions. Insights into the rate-limiting mechanism derived from selected diffusion kinetics models revealed film diffusion resistance controlled overall adsorption, with intraparticle diffusion promoted by greater accessibility to the IL within the pore networks of these HS systems. (C) 2015 Elsevier B.V. All rights reserved.